When buyers will purchase exactly as much as sellers are willing to sell, what is the condition that has been reached?
a. supply and demand
c. equilibrium
b. excess demand
d. price floor

What are similarities and differences between refraction, reflection, diffraction and absorption?

The average density of the planet uranus is 1.27 103 kg/m3. the ratio of the mass of neptune to that of uranus is 1.19. the ratio of the radius of neptune to that of uranus is 0.969. find the average density of neptune.

Which basic property determines a colored light's placement on the spectrum of visible light? a. speed b. frequency c. amplitude d. velocity